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Baba Sy - Exchange Engineer

Atlanta, GA
May 13, 2020

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Implementation of PowerShell scripts to efficiently fix errors for the customer's support teams found through the Active Directory environment.

Responsible for all components of Office 365 including One Drive for Business, Skype for Business, Share Point Online, Delve, Yammer and Exchange Online.

In-depth knowledge of Active Directory and LDAP technologies on Windows

Experience managing the following Microsoft technologies: Active Directory, Microsoft Identity software (ILM, FIM, MIM), Azure AD Connect and ADFS as well as Microsoft Federation.

Willingness and ability to produce high quality operational documentation, including Visio diagrams, high-level descriptions of the environment, as well as detailed instructions outlining the steps required to repeat the build-out and configuration of the infrastructure.

Working knowledge of PowerShell scripting.

Experience in integration & delivery of an UC project (Skype/Lync)

Hands-on experience with Skype/Lync.

Excellent written & oral communication, prioritizing, and relationship building skills

Adaptation skills: ability to manage unexpected and complex situations & proactively propose contingency plans.

Proven problem solving, analysis, planning, and time management skills.

Experience in with Virtualization technologies like installing, configuring, Hyper V, VMware, vSphere. Creation, management, administration and maintenance of virtual servers and clients.

Well-versed in configuring, maintaining and deploying Windows Servers (2003, 2008 and 2012, 2016).

Documentation of system configuration and standard operating procedures

Strong experience with Active Directory, including advanced features such as certificate services, federation services, Active Directory domain and forest restructuring, consolidation and migrations.

Work and Experience in Exchange on prem and Online administration

Administration of Office 365 services

Hybrid Migration from Exchange 2016 to office 365

Migration from Exchange 2013 to Exchange 2016

Installation and Administration of Exchange 2016 servers,

Decommissioning of Exchange Servers

Teams configuration and Administration

SharePoint Administration

OneDrive Administration

Scripting using PowerShell of VTA Separation Process

Automation of Distribution Groups from on prem to O365

Calendar issue resolution and troubleshooting

Email Tracing and tracking

Quarantine management

ATP Management

eDiscovery administration

DLP Administration

Active Directory and Azure AD Management

Azure AD Connect Management

Hybrid Configuration Wizard (HCW)


Exchange 2010/2016 PowerShell

Exchange 2010/2016 Client Access Topology

Exchange 2010/2016 Message Routing Topology

Exchange 2010/2016 DAG and Replication Topology

Windows 2008 R2, Windows 2012

Enterprise SAN Technology

Virtual Environment Hyper V and VMWare

LDAP and Active Directory expertise.

Exchange and Lync / Skype for Business expertise.

Lync 2015, 2013, 2010 / Skype-for-Business Server and Skype-for-Business Online

Active Directory Domain Services (AD DS)

Active Directory Federation Services (AD FS)

Active Directory synchronization mechanisms (Azure AD Connect or DirSync)

Active Directory sites, trusts, and topology

Azure AD Connect (DirSync), Active Directory Domain Services (ADDS)

Active Directory Federation Services (ADFS)

Office 365, Exchange 2016, Exchange 2010

Microsoft Office 2010/2013/2016

Lync and Skype for Business

Windows Internet Explorer and other browser technologies

Windows Update and Microsoft Update

Mobile Devices (ActiveSync)

Active Directory sites, trusts, and topology

Firewall technologies

Intune, Solar Winds

Mobile Device Management with Mobile Iron and ActiveSync

Storage: SAN, NAS, RAID

Security: Public/Private Certificates, DomainKeys Identified Email (DKIM), Domain-based Message Authentication, Reporting and Conformance (DMARC), Sender Policy Framework (SPF), Anti-Virus McAfee, Symantec, Barracuda, Email Security Gateway services, Firewall technologies, SSL certificates

Support: Service Now


Valley Transportation System 12/2019 - Present

San Jose, CA

Senior Exchange architect

Hired to plan, design and deploy a migration of more than 20,000 users from Exchange on-Prem to o365 in a hybrid environment.

Met with Project Managers to gather requirements for new hybrid communications environment.

Discovery of current environment of Exchange 2013 using PowerShell.

Design a new Exchange 2016 environment using exchange calculator for 16 mailboxes Servers, create a DAG

Started the Minimal/Express Migration using the Office 365 Exchange Hybrid Configuration Wizard, preparing mailboxes for synchronization.

Managing Azure AD, ATP policies, Transport rules, DLP and retention policies

Utilized the Hybrid Configuration Wizard (HCW) on Exchange 2013 to establish send and receive connectors with Office 365.

Verified the domain in the Office 365 tenant. Verify registration, ownership, and access in Office 365 and added the domain in Office 365 to the domains page.

In the minimal hybrid configuration wizard, updated to prepare the on-premise mailboxes for migration.

Implemented Azure AD Connect wizard to complete the synchronization of users from on-premise to Office 365, using the default options-for-express settings, and verified all users synchronized to Office 365.

Assign and admin Office 365 licenses to users using either PowerShell or the Admin Center.

Design of batches (Test, Pilot and Production), kick off the migration and monitoring the progress using PowerShell.

Verify Office 365 test migration results using automated reports in PowerShell.

Updated Public DNS Records and changed MX record to point to Office 365 so all new emails will be routed to Office 365.

Skype for business and Teams administration and troubleshooting.

Troubleshooting post migration issues on L3 support.

Managing other o365 services like SharePoint, OneDrive for business, Planner, Flow, etc.

Bio Products Laboratory 06/2018 – 12/2019

Wichita Falls, TX

Senior Office 365 Migration Engineer

The company wanted to move to the cloud to reduce costs and for cloud benefits. Since this is a mid-sized professional firm with right around 2000 users. I planned a cutover migration from Exchange 2013 on prem to Microsoft Office 365, executing the migration in phases of mailboxes, files, and settings. As an insurance agency, required to maintain documentation of all communications, operations, and appointments for years, there was a lot of content to move.

Implemented a cutover migration from Microsoft Exchange 2010 to Exchange Online/Office 365, configuring Skype-for-Business for unified communications (UC).

Worked with stakeholders to understand business needs, and made recommendation for office 365 with Skype-for-Business.

Used Exchange Calculator to evaluate current environment and plan project based on needs.

Provided detailed plans to stakeholders describing project and how it met requirements.

Upgraded and patched the current Microsoft Exchange 2010 servers and verified the domain to prepare for migration.

Implemented Office 365, and created user mailboxes.

Created empty mail-enabled security groups on Office 365.

Configured domain in Office 365, and DNS/MX settings, and verified routing.

Used PowerShell scripts to create mailbox migration batch.

Using PowerShell moved the batch of all mailboxes and data files, per Microsoft best Practices.

Monitored migration status and adjusted as needed.

Enabled Lync/Skype-for-Business feature in Office 365 mailboxes.

Assigned user licenses for Office 365 user accounts.

Fine-tuned Office 365 performance and ensured compliance with corporate policy.

Captured Office 365 security alerts and integrated the feeds to log collection services.

Instructed and advised on litigation holds and eDiscovery capabilities within Office 365.

Performed validation of tenant configurations and required domains to Office 365.

Worked with technical support to configure all user workstations office 365 and Skype-for-Business and work with end-users to ensure a smooth transition.

Decommissioned Microsoft Exchange 2013 servers.

Trained technical staff on end-user support, administration and troubleshooting of Office365 and Skype-for-Business.

DCI Biologicals 02/2017 – 06/2018

New York, NY

Microsoft Exchange Migration Engineer

The company wanted to move from a legacy Exchange 2013 environment to Exchange 2016 with Office 365 hybrid environment. The stakeholders wanted to keep on prem servers and security along with cloud functionality including Skype-for-Business for day-to-day operations.

Met with stakeholders and confirmed their decision to make sure we had the right solutions for them. Then I started by analyzing the current environment.

The current environment included Exchange 2013, Windows Server 2012/R2, and virtualization using VMWare.

Drew up a plan for the new environment with implementation for migrating from the old or existing environment.

Ensured all updates and patches to Windows Servers and Exchange 2013, and implemented Exchange 2016 in virtual environment and migrated user mailboxes in batches of 50 from Exchange 2013 to Exchange 2016.

Set-up ADFS for Active Directory synchronization/Federation with Azure Active Directory.

Implemented Office 365, verified and configured domain in Office 365 and configured Azure AD Connect to create a federation between Exchange 2016 and Office 365.

Set-up single-sign-on for Exchange user mailboxes to Outlook on Office 365 with little to no intrusion on the user activities.

Architected a new messaging environment to include a dual DAG for high availability and failover scenarios.

Utilized the Hybrid Configuration Wizard (HCW) on Exchange 2013 to establish send and receive connectors with Office 365.

Created migration batches in the Office 365 Admin Center, and used PowerShell to check the status of the migration, and get statistics.

Assigned licenses in Office 365 and using Azure AD connect synchronized Active Directory credentials in Office 365.

Replicated the policies to EOP for DLP and encryption for compliance.

Used Microsoft Intune Integration with a Security Group for Advance MDM management on the Hybrid Exchange environment.

Managed and maintained Active Directory user accounts and security groups, Group Policy, and file/print services in a Microsoft Windows Server 2012R2 VMWare environment.

Detected and corrected issues on Active Directory before the migration used IdFix Tool.

Created PowerShell scripts to change the UPN for multiple groups of users on the Active Directory.

Enabled Skype-for-Business feature for Office 365 migrated users.

Provided hyper-support to users post migration and performed Knowledge Transfer (KT) with the help desk team.

Troubleshooting of connectivity issues, calendaring, and Active Directory issues.

Managing groups, permissions, and shared mailboxes.

Sam’s Club 11/2015 – 01/2017

Bentonville, AR

Microsoft Exchange Engineer

Migrated Exchange 2010 farms to Exchange 2013 and added an Exchange 2016 farm in hybrid with Office 365.

Planned a Retention solution for Exchange server 2013/2016 and Backup for Enterprise Network and Active Directory.

Performed multiple administrative task in ECP and administering the Users, SFB, Password, Exchange and Security Management.

Implemented single-sign-on Authentication method with Office 365 and configured DirSync and ADFS for Active Directory Synchronization.

Migration from 2010 to 2013 as well 2013 to Office 365.

Troubleshooting Experience with Outlook, Exchange server, ActiveSync and OWA.

Migrating from Physical Server to Virtual Server.

Creating and deploying of operating system template images using VMware infrastructure clients.

Migrated (P2V, V2V) servers by using VMware converter and updating VMware tools on guest.

Implement and troubleshooting Microsoft Exchange/Skype for Business server and Active Directory Infrastructure.

Management of the Microsoft Clusters.

Vast experience in troubleshooting and resolving both client and server-side issues.

Implementation of Tenant Office 365 with Azure AD connect and ADFS for single Sign ON.

Upgrade form ADFS 2.0 to ADFS 3.0.

Responsible in maintaining the settings of connectivity with Outlook and User Mailboxes.

Met with requirements for the External connectivity Exchange i.e. OWA, ActiveSync and Outlook Anywhere.

Performed trouble shooting issues of Office 365 including mail routing issues.

Prepared on premises AD infrastructure for migration effort by using IDFIX tool for directory clean up.

Responsible for documentation of the Microsoft O365/Exchange and Messaging-computing environment.

Providing High Availability Solutions (DAG) for User Mailbox Databases.

Experience with windows clustering services and deploying CCR, SCR, LCR

Create user accounts, assign group rights, create distribution lists, maintain windows folder security, create group policy etc.

Administered the Domain Name Server (DNS) . The DNS is tied to the directory, and the operation of the directory service is based on a properly functioning dynamic DNS infrastructure.

Avis 05/2014 – 11/2015

Parsippany, NJ

Microsoft Messaging Administrator

Administered, supported and troubleshooting Exchange messaging environment consisting of Exchange 2010, Exchange 2013 and Office 365.

Performed various Office365 administrative roles in Exchange Control Panel (ECP), Skype for Business, Password management, Exchange and Security management.

Designed and implemented Azure AD, Azure AD Connector, ADFS, OCS to Lync 2010 and Exchange Migrations, Migration of Exchange Servers, Migration to Office 365.

Involved in Configuring and Managing Virtual and Physical infrastructure in Cloud and On-Premises on Windows Server, Active Directory, and Microsoft Azure.

Worked on Integration with Azure backup.

Performed Pre-migration test for user from Exchange 2010 to Office 365.

Maintained documentation for all the deployment related steps of the Microsoft 365/Exchange and Messaging-computing environment.

Worked on deployment of hybrid Office 365 environment with upgraded Exchange 2013 environment.

Management of users, computers, and GPOs in Active Directory.

Maintaining Active Directory infrastructure, create accounts, groups, GPO etc.

Designed Power Shell Scripts to automate migration steps.

Maintained organization of new and removed Active Directory users created by Exchange. Was responsible for the creation of Active Directory (AD), GPO, Domain Users, Users and groups and given appropriate permissions, privileges for access to LAN and Domain Environment.

Involved in Operation management for Lync/Skype for Business, Using Windows Server 2012, cloud Server.

Worked on establishing User accounts and Group policies by troubleshooting the existing GPOs.

Involved in Setting up Outlook Anywhere for the environment and perform databases maintenance using Essential tools.

Participated in the verification of DNS and Exchange 2010 Systems and made changes to the infrastructure to better suit migration effort.

Environment: Exchange server 2010, Office 365, Windows Server 2010 R2 /2012 R2, Azure Directory, Active Directory, Lync 2010/2013, Skype for Business.

Project: Migrating Users from on premises Active Directory to Office 365 and from Exchange 2013 to Exchange online.


Continuously improved by capturing and analyzing the appropriate social data, insights and practices and acting on the information Lead effort to deploy a hybrid Office 365 environment with upgraded Exchange 2013 environment.

Planned and implemented transition from Exchange 2013 to Exchange Online for a few hundred users.

Traced quarantined emails and resolved related issues.

Worked with IT manager, to discover the number of E3 licenses needed for Office 365, and the number of E5 licenses that would be needed for PSTN Conferencing.

World Vision Mauritania 02/2010 – 03/2014


I.T. Manager

Supervisor of I.T. department team members

Managed all Servers (Domain Controller, mails and finance)

National Bank of Mauritania (BNM) 03/2008 – 05/2010


Information and Communications Technology Engineer

Managed all Servers (Domain Controller, mails and finance)

Engineer ICT in Installation of operating system and all software

User support via Help Desk System

Maintenance of computers, printers and other devices

Maintenance of network cable



Degree of IT Engineer (ISTI) – Dakar, Senegal

Degree of Technician ICT in Casablanca, Morocco


CISCO ICND1 (pending)

Comptia A+

Network+ (pending)

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